Switching power supply with electronic isolation

Details Switching power supply with electronic isolation Switching power supply with electronic isolation

1993-02-19

1994-09-06

Peckman, Kristine L.

Electric power conversion systems

Current conversion

With voltage division by storage type impedance

363 89, 323351, H02M 307

Patent

active

053453760

ABSTRACT:
A switching power supply that converts an input AC or DC voltage to a regulated output DC voltage while offering electrical isolation between the input and output stages through use of solid state switches and charge storage devices in place of isolation transformer used in traditional systems. The power supply uses two series connected switching blocks that alternately charge and discharge a storage capacitor, wherein each switching block includes a pair of switches which may be turned on and off with a duty cycle adjusted by a controller. The duty cycle and on time of each block is adjusted such that respective blocks are never turned on at the same time, thereby providing electrical isolation.

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patent: 4994954 (1991-02-01), Katz et al.
patent: 5148358 (1992-09-01), Estes, Jr.

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